Insulator clevis



March 24, 1925. 1,530,500

W. D. KYLE INSULATOR CLEVIS Filed Jan. 10, 1920 INVENTOR. W A. W *W ATTORNEYS.

. a short period trical wires,

Patented Mar 24, 1925.

UNITED STATES Mme GFFICE,

WELIAM D. KYLE, 0F MILWAUKEE, WISCONSIN, ASSIGNOR T0 LINE MATERIAL COH- .INSULATOR OLEVIS.

Application filed January 10, 1920.

To all whom it may; concern:

Be it known that I, WILLIAM a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and. State of Wisconsin, have invented new and useful Improvements in Insulator Clevises, of which the following is a description, reference being had to the accomp'anyinfgi drawings, which are a part of this speci cation. I

The present invention relates to certain improvements in insulating D. KYLE,

new and useful clevises for use in supporting overhead electruss wires, or the like, and has for its primary object to provide a novel form of securing strap or yoke member of bendable strip metal substantially U-shape in cross-section.

Another object of the present invention is to provide an insulator clevis of the class described in which the metal yoke orsecur ing members are made-70f bendable strip steel, whereby the samefwill, under stress, conform to the shape of the insulating block.

In the clevises of this class now in common use, the bolts employedto secure the yoke members to the insulating block bend after a strain has been applied thereto, and consequently, it is necessary that a line in which the clevis is used must be tightened after of use to accommodate for the slack caused by the bending of the securing bolt.

Hence, a further object of the present invention is to provide an insulator clevis of the class described in which the securin bolts and the openings therefor are curve from the centers toward the direction of strain. v

A still further object of the present invention is to provide an. insulator clevis of the class described in which the insulating block has two sets of opposed grooves in its sides for receivin the securing str'a s or yoke members W ich are formexl o bendable, channeled strip steel or the shape of the insulating block without liability of chip ing the block or may be bent by hand to '1: any insulating block.

With the above and other objects in view which will appear as the description procoeds, my invention resides in the novel con. struction, combination and arrangement of parts substantially as hereinafter described ta ken therethrough op osed grooves like, whereby the same will, under strain, conform to the Serial m. steels.

and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claims.

In the accompanying drawing I have illustrated one complete example of the physical emblodiment of my invention constructed according to the best mode I have so far devised for the practical application of the principles thereof, and in which:

Fig.1 is a plan view of an insulator clevis construtcd according to and embodying the various features of my invention.

Fig. 2 is a transverse sectional view therethrough taken on the line 2-2 of Fig. 1, and

Fig. 3 1s a longitudinal sectional view on the line 33 of Fig. 1.

Referring now more compenying. drawing ence characters out the several views, the numeral 5 designates a block of insulating material, such as porcelain, fiber, or the like, which is substantially cylindrical, and has two sets of or channels 6 and 7 in its si e walls for receiving the ends 8 of suitable substantially U-shaped securing or yoke members 9 and 10, to be later descr1bed.

As best shown in Figures 2 and 3, the grooves 7 are connected together near one end by means of an opening 11 curved from its center toward the other end of the block and the grooves 6 are connected together by means of an opening 12 also curved 'in a direction opposite opening 11. The members 9 and 10 are of substantially U-sha e and have their outer closed ends of less diameter than the distance between their open ends for engagement with the cable, wire or the like, with "which they are employed, and have their. inner surfaces rounded to prevent the cutting of the wire or cable with which they are used when strain is applied thereto. As the members 9 and 10 are formed of bendable channeled strip material U-shaped in cross section, they are normally provided with the desired curvature, as described.

The members 9 and 10 are arranged with their closed end extended in opposite directions amp. thgir open ends1 secured in the grooves an (i, respective b fasten' bolts 13. The bolts y y mg particularly to the acin which like referdesignate like p. 'its throu hto thevcurvature of the 13 are also curved, as'

best shown in Figures 1 and 2, and their curvature is from their centers toward the closed end of the yoke member with which they are employed, or, in other words, their curvature is in the direction of strain. WVere the bolts 13 to. be straight, they would normally bend after being subjected to a strain for any period of time and thus damage the ends of their opening and necessitate the tightening of the cables or wires with which the clevis is used to accommodate for the slack caused by the bending of the bolts. By my structure, I anticipate this bending of the bolts 13 and thus when the clevis is placedin a line it is not necessary to again tighten the line after the clevis has been used a'short time. p

The bolts 13 are locked in position by means of the usual nut 14 and fiat and lock washers 15 and 16. As before stated, the members 9 and 10 are made of bendable strip material so that they will conform to the shape of the insulator when under strain, and may be readily bent by hand to fit the insulating blocks 5 of various sizes.

-Froni the foregoing description taken in connection with the accompanying drawing, it will be readily apparent to those skilled in the art to which aninvention of thischaracter appertains that I provide an insulating clevis embodying a novel form of strap which will be practical for the purposes described.

WhatI claim as my invention is:

1. An insulating clevis of theclass described comprising an elongated block of insulating material havin two sets of opposed channels in the block, the channels of each set being connected by a transverse opening, the opening of'one set being adjacent one end of the block and theopening 0 another set being adjacent the other end of the block and at right angles to the other opening, a pair of U-shaped yoke members of U-sha e in cross section and each having their en s disposed in one set of the channels, and fastening bolts passed through said yoke members and openings in the block. j j

2. An insulating clevis of the class described comprising a block of insulating material having two sets of opposed channels in the block, the channels of each set being connected by a transverse opening, the opening of one set being adjacent one end of the f whereby the and the opening of another set being adjacent the other end of the block and at right angles to the other opening, a pair of like yoke members each having their ends disposed in 'one set of the channels, and fastening bolts extending transversely through said yoke members and openings in the block, each fastening bolt being curved atits center in its direction of strain.

3. An insulating clevis of the class described comprising .1 block of insulating material having two sets of opposed channels in the block, the channels of each set being connected by a transverse opening, the opening of one set being adjacent one end of the block and the opening of another set being adjacent the other end right angles to the other opening, a pair of like U-shaped yoke members-of U-shape in cross section and each having their ends disposed in one set of the channels, said yoke members being shaped to conform with said channels and being substantially bendable, and fastening bolts passed through said yoke members and openings in the block.

4. An insulating clevis of the class described including a block of insulating ma terial having-channels in its opposite side walls and an aperture therein near one end connecting the channels, a substantially U- ,shaped yoke member having its open ends disposed in said channels with its closed end adjacent the end-of theblock remote from the opening therein, and a fastening bolt passed through apertures in said her and the opening in the block, opening and said fastening bolt'being curved from their centers toward the closed end of said yoke member, and said yoke member of block being formed of bendable channeled -metal same will, when under stress, conform to the shape of the block.

5. A clevis of the class described including a flexible U-shaped securing strap formed to engage the opposite sides of an insulating block and having transverse end openings, the strap portions also being of U-shape in cross section, and means extending through the end openings for attachin the end portions of the strap to a block, said block having longitudinal grooves of curved formation in cross section and into which grooves the straps extend.

In testimony whereof, I afiix my signature.

WILLIAM D. KYLE.

said block of the block and at- 

